2, 4-d salt and composition containing the same



Patented Apr. 25 1950 UNITED STATES PATENT OFFICE 2,505,059 2,4-p SALT AND COMPOSITION comamme 'rna sum Ralph Gower Davies Moore, Phillipsburg, N. 1., assignor to J. '1. Baker Chemical 00., Phillipsburg, N. 1., a corporation of New Jersey No Drawing. Application August 16, 1946, Serial No. 691,166

2 Claims. (CL 260-247) I This invention relates to a new derivative of 2,4-dichlorophenoxyacetic acid characterized by extremely high water solubility even at low temperatures, such that, by its use, stable, highly concentrated aqueous solutions containing 2,4- dichlorophenoxyacetic acid may be prepared.

The new salt or the invention is the morpholine salt,

can ocmcinm o It forms white crystals, M. P. 135 C. It is readily prepared by heating the acid and the morpholine together in the presence of water. It is extremely soluble in water, its solubility ranging up to almost 70% at room temperature (20 C.). At 0 C., it solubility is over 50% and at C. over 60%. The salt has the activity. from the standpoint of effect on plants to which it is applied, characteristic of 2,3-dichlorophenoxyacetic acid. Thus in dilute aqueous solution (.01%- .1% or somewhat more based on the 2,4- dichlorophenoxyacetic acid content) it is useful I as a plant hormone or auxin, or as a herbicide or weed killer, its method of use and concentration at the time of use being similar to those of the 2,4-dichlorophenoxyacetic acid preparations presently being used for these purposes.

The preparation of the salt will be illustrated by the following example, but the invention is notlimited thereto:

2. An aqueous solution of the morpholine salt of 2,4-dichlorophenoxyacetic acid.

RALPH GOWER DAVIES MOORE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,163,181 Ulrich June 20, 1939 2,396,513 Jones Mar. 12, 1946 FOREIGN PATENTS Number Country Date 650,380 Germany June 1, 1935 OTHER REFERENCES Textbook of Organic Chemistry by G. H. Richter, 1938 edition, Wiley, p. 235.

Synthetic Organic Chemicals, 12th edition, pp. -76 (1945), Carbide and Carbon Chemical Co i 

1. THE MORPHOLINE CALT OF 2,4-DICHLOROPHENOXYACETIC ACID. 